N = 10**6
L = []
for i in range(1, 700):
    for j in range(1, 700):
        L.append((j/i, i, j))
L.sort()
# print(L)

nowx = 1
nowy = -10**9 + 1
nowslope = -1

points = [(nowx, nowy)]
NN = len(L)
for i in range(1, NN):
    slope = L[i][0]
    x, y = L[i][1], L[i][2]
    if slope <= nowslope:
        continue
    
    nowx += x
    nowy += y
    nowslope = slope
    points.append((nowx, nowy))
    if len(points) == N // 4:
        break
    # ans.append(str(nowx) + ' ' + str(nowy))

points2 = []
points3 = []
points4 = []

for (x, y) in points:
    points2.append((x, -y))
    points3.append((-x, -y))
    points4.append((-x, y))

points2.reverse()
points4.reverse()

ans = []
for x, y in points:
    ans.append(str(x) + ' ' + str(y))
for x, y in points2:
    ans.append(str(x) + ' ' + str(y))
for x, y in points3:
    ans.append(str(x) + ' ' + str(y))
for x, y in points4:
    ans.append(str(x) + ' ' + str(y))

print(N)
print('\n'.join(ans))
# for i in range(N):
#     print(ans[i][0], ans[i][1])

# print(NN, N, len(ans))